Miter-clamp.



J. ORLANDI.

MITBR CLAMP. Y APPLICATION FILED 3111.14, 1911. 1,015,336. Patented Jan. 2.3, 1912.

COLUMBIA PLANoGRAr-H Co.. WASHINGTON. u. c.

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J. ORLANDI..

Mmm CLAMP. APPLICATION FILED JAN. 14,1911.

1,015,836. Patented Jan;23 ,1912.

2 SHEETS-SHEET 2.

i S14/gam@ @g- Inkel/bho @LW/kwamen COLUMBIA PLANOOAPH C0.. WASHINGTON. n. r.

the wood to be worked in any one of aplu- JOHN onLANDI,Y oF. sALIsBURY, comvncrfcu'r. i

,ivirrrnnfcLAMn To all whom 'it may concern:

Be it known that I, JOHN ORLANDI, a'rsub-l ject of the King of Italy, residing in the village of Salisbury, `county of Litchfield,

State of Connecticut, have invented certain new and useful Improvementsk in M1ter,`

Clamps, of which they following is a specification. s

My invention relates to meansY for clamping a board or plank in*predeterminedrela tion to a set of guides for the purpose of planing or otherwise working vthe wood in line with the guides. In my improved structurel provide means for quickly and positively clamping rality of positions, and my device has the with slight adjustment of the clamp.N 'v

In the accompanying drawings which form a part of this specification, Figure 1 is an elevation of myy improved device mounted upon a sawhorse or similar struc-` ture, and holding a plank or board ready to be planed; Fig. 2 is an enlarged side eleva-y tion of my device; Fig. 3 is anwend' view, and Fig. l is a transverse sectional view on line IV-IV of Fig. 2.

Referring to the drawings inv detail, the numeral 1 designates a pair of, parallelV longitudnial guides carrying in their xfaces the grooves 2. 'Ifhese guides are connected at one extremity by the' bar 3 having tongues t entering the grooves in the guides,"anl at the other by the member 5, having similar tongues, not shown, entering the grooves and having a portion 6 extending above the guides formed of the two inclined flat faces 7 and 8 angularly Ydisposed to oneanother.

These faces register and are in line with, respectively, the strips 9 and 10 secured to the angle portions 11 ofthe guides bythe screws 12, or in any other Vsuitable manner.A

The cross-bar 3 carriesan up-stand'ing lugl 13, through the internally threadedportion 141- of which passes a screw 15 carrying Vat one end a knob or handle 16. The other eX!V tremity is groovedat 17 and lentersa socket,

Specication of Letters Patent. application mea 'January 14,1911.` serial No. 602,542.

. acting as guides tothe workman.

A set-screw 22 passes through the.

manner, isi a block 24 having the facesz 25v lrammed Jan. 23,1912;

and'26,^substantially parallel to the faces 7 and' 8 ofithe fixed block 5. Pins 27 and fr28 secured toeither end of the structure enter bearingsk in the blocks 29 and 30,'.respectively. Set-screw 41 may be `provided forl clamping the pins rigid with relation to the blocks. Theseblbcks comprise theuprights 31 and32 and the base-portions 33' and 34,

l which may be pierced'ltofaccommodate bolts or screws 35 and 36 for securing thefcomfl plete device to anypsuitable structure', such as the sawhorse`37, shown in Fig. 1.

The operation 4of'mydevice is extremely simple. Rotationof the knob or handlel, vandconsequently, of thelscrew 1,5, will cause the crosshead and block carried by vit to further advantageof being adapted toreceive a numberof different sizes of timber advance toward or recede from the stationary block. A board or plank 38 may thus lreadily be clamped between the two blocks and, thestructure as a -unit permitted "to swivel upon the pins until the eridof the board, or plank 'restsron the ground, as is illustrated in `Figfl, thus relieving the de? vicelfromthe greater part of the weight of the board or plan-k to be worked. In actual service the y wood to be planed ymay be face, theinclined surfaces of the 'two blocks i,

I Ifind it .desirable to useditferent angles with thel horizontal onthe'two guide surfaces of theblocks, as, for instance, 621g degrees for the surfaces 7 and 25, therebylpermitting a variety of work to be accomplished expeditiously in the same clamp. For' accomplishing (work at different angles/from these', yI provide a wedge-shape block, or

v grees forfthe surfaces 8 and 26," and 45 defilling piece l0 indicated'fin brokenlines in I Fig. 3, against which 4the board `or plank may rest,'thus changing the effective yangle ofthe guide Vsurfaces with respect to 'the plank. VI preferably make the angle of the surfacevof the wedge with the horizontal 15 degrees, but it is obvious that the wedgefmay be given` any angle, or a series of wedges employed for .doing a variety ofV work.v

Having thus described my invention, I

l 1. vA clamp comprising a fixedblock, a

movable block, means for positively advanceV ing and retracting the latter, sa'idfbloc'ksf having surfaces to guide a tool in working a board or plank clamped between said blocks, and means permitting said clamp as a unit to swivel about an axis substantially parallel to the direction of motion of the said movable block.

2. A mitering clamp comprising a base frame consisting of two parallel guides grooved on their adjacent faces and connected at their ends by cross-bars, the crossbar at one end carrying a block having guide faces lying in planes parallel to the longitudinal edges of the guide members, but oblique to the plane of the base or frame, a crosshead movable longitudinally of said'guides and having tongues slidable in the grooves therein, a block secured to said cross-head having inclined guide faces, strips of wood secured to the outer faces of the longitudinal guide members, said strips having inclined guide faces, each of said guide faces and the adjacent inclined guide faces of the fixed and movable blocks lying in the same piane, and means for forcing said cross-head and movable block toward said fixed block to clamp a board or plank between said blocks.

3. A mitering clamp comprising a base, a block fixed thereto, a second block movably mounted on said base and siidable longitudinally thereof, said blocks having guide faces to guide a tool in working a board or plank clamped to said blocks, said guide faces lyingin the same plane, means for forcing said movable block toward said fixed block, studs projecting from each end of said base, and supporting blocks for 'said base provided with bearings in which said studs are journaled.

4. A mitering clamp comprising a supporting base, a block mounted in fixed position upon said base having a guiding surface inclined to the plane of said base, a block movably mounted upon said base and slidable longitudinally thereof and having an inclined guide face lying in the same plane as the guide face upon said fixed block, means for forcing said movable block toward said fixed block to cause the same to clamp a board or plank in position to be worked by a tool guided by the guide surfaces of said fixed and movable blocks, and a wedge-shaped filling block adapted to be supported upon said base between said fixed and movable blocks, said filling block having an upper surface adapted to support the board or plank to be clamped between said fixed and movable blocks, said upper surface lying in a plane passing through the line of intersection of the plane of the inclined guide surfaces on the fixed and movable blocks with the plane of the upper surface of the supporting base, the inclination of the plane of the upper surface of said wedgepiece with relation to the plane of said base being more acute than the corresponding inclination of the guiding surfaces of said blocks.

JOHN ORLANDI.

lVitnesses EDMUND QUINCY Mosiis, KARL S. Dm'rz.

Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patents, Washington, D. C. 

